Install Instructions

General Filters
Incorporated
10 | P a g e
3.3.3 Water Drain
The Elite Steam Humidifier requires a connection to a drain. The drain pipe may be routed out the bottom of the unit using
the included grey 90° angle fitting. The drain pipe can be MIN 1-1/2” ID PVC, CPVC or polypropylene. The drain pipe is not
glued or otherwise attached to the (supplied) 90° drain elbow, so it must be supported by itself. A coupling (field supplied)
should be used. The Elite Steam Humidifier includes a drain tempering valve that runs whenever the drain pump runs and
flushes cool water into the drain line to insure the drain water temperature never exceeds 140°F or 60°C. The drain water
characteristics are:
• Drain Flow Rate – See Technical Specifications (Section 8)
• Drain Pipe – 1 ½” ID
• Temperature 140°F or 60°C
3.3.4 Drain Pipe
When using a bottom outlet drain, attach the included 90° fitting to the drain outlet. The drain outlet may be rotated.
: DO NOT connect supplied 90° grey drain elbow directly to drain pipe. The drain pipe must flow freely
and without back pressure.
3.3.5 Condensate Pump
When using a Condensate Pump, ensure pump selected is capable of handling 7.0 GPM for up to 10-15 seconds. See
https://www.generalfilters.com for a list of suitable condensate pumps.
3.4 Steam Distribution
3.4.1 Steam Nozzle Injection (included) (Used when air flow is greater than 1000 CFM)
The maximum allowed duct static pressure is 2 in WC.
The Elite Steam Humidifier duct injection models include a plastic duct injection manifold (See Figure 3.i. and
Table 3.f. for associated measurements).
Airflow 1000 cfm min.
Airflow
Min 8”
Height >8”
=
=
Airflow
1000 cfm min.
1/3 Height
Airflow
1000 cfm min.
=
=
24” min
Upstream
36”min
Downstream
Inches
Millimeters
A
1.24”
31.5 mm
B
1.96”
50 mm
C
2.20”
56 mm
D
2.26”
57.5 mm
E
3.93”
100 mm
F
 0.31”
 8 mm
G
 0.86”
 22 mm
H
 1.18”
 30 mm
I
0.47 or 0.87”
12 or 22 mm
Figure 3.j
DO NOT introduce steam into a duct that has interior insulation.
Table 3.f.
Figure 3.i
Bottom Installation
Horizontal Duct
Side Installation
Horizontal Duct
Side Installation
Vertical Duct
Steam Nozzle